A Photo Guide to 20 Types of Skin Bumps You Might Find on Your Body

Reported by Women's Health Magazine.

That mysterious bump you found in the shower last night? Before you spiral into a WebMD rabbit hole at 2 a.m., know this: most skin lumps are harmless, but that doesn't mean you should ignore them. According to Women's Health Magazine, board-certified dermatologist Mona Gohara, MD, puts it plainly: "If a spot looks different than the rest, you should definitely consult a dermatologist." The skin is your largest organ, and it talks — the trick is knowing which signals actually matter.

Some of the most common body bumps are little more than a nuisance. Keratosis pilaris — those rough, sandpaper-textured dots on the backs of your arms — happens when excess keratin clogs hair follicles, explains Debra Jaliman, MD. It's harmless, incurable, but manageable with lactic acid moisturizers and a good exfoliating brush. Cherry angiomas, the small red spots made of clustered blood vessels, are equally benign; they show up more frequently with age (appearing in roughly three-quarters of adults over 75) and can multiply during pregnancy due to elevated estrogen. A dermatologist can zap them off with a laser if they bother you. Calluses — thick, hardened skin on hands and feet — are just your body's way of protecting itself from friction. A pumice stone and some urea cream wrapped in Saran wrap overnight will do more for your heels than any luxury spa treatment.

The Bumps That Actually Need Attention

Not everything is benign, and a few bumps genuinely warrant urgency. Actinic keratoses are the ones to take seriously: rough, scaly patches caused by cumulative UV exposure that Dr. Jaliman calls "essentially precancerous growths." Left untreated, they carry a 5–10% chance of progressing to squamous cell carcinoma. Cryotherapy and topical prescriptions are the standard fix — but SPF 30 daily is the prevention. Keloids, those thick, raised scars that grow well beyond the original wound, can follow anything from a piercing to a C-section, and are more prevalent in people with deeper skin tones, notes Joshua Zeichner, MD of Mount Sinai Hospital. Treatment options range from steroid injections to laser therapy. And moles — yes, even ones you've had for years — need annual monitoring. Any mole that bleeds, changes shape, or shifts color should be seen immediately, says Dr. Gohara. Dermatofibromas, described by Tsippora Shainhouse, MD as firm, pink-brown bumps often triggered by ingrown hairs or bug bites, are generally harmless solo acts — but multiples could signal an underlying immune condition like lupus.

The throughline across all of it: your skin will usually tell you when something is off, and the best thing you can do is actually listen — then let a professional confirm what you're hearing.

Read the original at Women's Health Magazine.